All this advanced knowledge and still cant beat Sektor with Kabal, how is this even possible LOL.Yes the roll activates damage scaling, but even then her average damage output in a combo will exceed Kitana and Jade.
A blocked teleport vs Mileena results in a 50% damage punish (like Kitana), which Jade struggles to meaningfully punish. Mileena has a pop-up mid hitting knee that will result in around 30%. In comparison, I think the female ninja 4 hit kick combo does 24%. Mileena's 5 hit combo is also a excellent punisher that will result in around 40% (also option selectable with glitchjab). Any respectable roll combo midscreen will do at least 30%. In the corner a good roll combo will hit around 40%.
Mileena is basically Jade with a higher damage output and better punishes. In contrast Jade has a boomerang, which does not really matter, and glow, which is matchup specific. Mileena has roll that is a mid launcher that punishes sweeps, HK, LK and crossover jumpins for more damage than Shadow Kick, Sai (You have to charge it, but its a nice combo ender and is sufficiently plus on block with the instant air version), and Teleport (This move is good vs jumps and allows mileena to switch sides during combos to offer better positioning towards a corner).
Mileena is just a higher exectution character, and very hard to play at a high level